Numbers 31:19

And stay outside the camp seven days. Whosoever has killed any person, and whoever has touched any dead one, purify yourselves and your captives on the third day and on the seventh day.

Numbers 5:2

Command the sons of Israel that they put out of the camp every leper and everyone that has an issue, and whoever is defiled by a dead body.

Numbers 19:11-22

He who touches the dead body of any man shall be unclean seven days.

1 Chronicles 22:8

But the Word of Jehovah came to me, saying, You have shed much blood and have made great wars. You shall not build a house to My name because you have shed much blood on the earth in My sight.

Treasury of Scripture Knowledge

Summary

And do ye abide without the camp seven days: whosoever hath killed any person, and whosoever hath touched any slain, purify both yourselves and your captives on the third day, and on the seventh day.

Bible References

Abide

Numbers 5:2
Command the sons of Israel that they put out of the camp every leper and everyone that has an issue, and whoever is defiled by a dead body.
Numbers 19:11
He who touches the dead body of any man shall be unclean seven days.
1 Chronicles 22:8
But the Word of Jehovah came to me, saying, You have shed much blood and have made great wars. You shall not build a house to My name because you have shed much blood on the earth in My sight.